sys/netgraph/bluetooth/socket/ng_btsocket.c

   1 /*
   2  * ng_btsocket.c
   3  */
   4
   5 /*-
   6  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   7  *
   8  * Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com>
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * $Id: ng_btsocket.c,v 1.4 2003/09/14 23:29:06 max Exp $
  33  * $FreeBSD$
  34  */
  35
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/bitstring.h>
  39 #include <sys/errno.h>
  40 #include <sys/domain.h>
  41 #include <sys/kernel.h>
  42 #include <sys/lock.h>
  43 #include <sys/mbuf.h>
  44 #include <sys/mutex.h>
  45 #include <sys/protosw.h>
  46 #include <sys/socket.h>
  47 #include <sys/socketvar.h>
  48 #include <sys/sysctl.h>
  49 #include <sys/taskqueue.h>
  50
  51 #include <net/vnet.h>
  52
  53 #include <netgraph/ng_message.h>
  54 #include <netgraph/netgraph.h>
  55 #include <netgraph/bluetooth/include/ng_bluetooth.h>
  56 #include <netgraph/bluetooth/include/ng_hci.h>
  57 #include <netgraph/bluetooth/include/ng_l2cap.h>
  58 #include <netgraph/bluetooth/include/ng_btsocket.h>
  59 #include <netgraph/bluetooth/include/ng_btsocket_hci_raw.h>
  60 #include <netgraph/bluetooth/include/ng_btsocket_l2cap.h>
  61 #include <netgraph/bluetooth/include/ng_btsocket_rfcomm.h>
  62 #include <netgraph/bluetooth/include/ng_btsocket_sco.h>
  63
  64 static int                      ng_btsocket_modevent (module_t, int, void *);
  65 static struct domain            ng_btsocket_domain;
  66
  67 /*
  68  * Bluetooth raw HCI sockets
  69  */
  70
  71 static struct pr_usrreqs        ng_btsocket_hci_raw_usrreqs = {
  72         .pru_abort =            ng_btsocket_hci_raw_abort,
  73         .pru_attach =           ng_btsocket_hci_raw_attach,
  74         .pru_bind =             ng_btsocket_hci_raw_bind,
  75         .pru_connect =          ng_btsocket_hci_raw_connect,
  76         .pru_control =          ng_btsocket_hci_raw_control,
  77         .pru_detach =           ng_btsocket_hci_raw_detach,
  78         .pru_disconnect =       ng_btsocket_hci_raw_disconnect,
  79         .pru_peeraddr =         ng_btsocket_hci_raw_peeraddr,
  80         .pru_send =             ng_btsocket_hci_raw_send,
  81         .pru_shutdown =         NULL,
  82         .pru_sockaddr =         ng_btsocket_hci_raw_sockaddr,
  83         .pru_close =            ng_btsocket_hci_raw_close,
  84 };
  85
  86 /*
  87  * Bluetooth raw L2CAP sockets
  88  */
  89
  90 static struct pr_usrreqs        ng_btsocket_l2cap_raw_usrreqs = {
  91         .pru_abort =            ng_btsocket_l2cap_raw_abort,
  92         .pru_attach =           ng_btsocket_l2cap_raw_attach,
  93         .pru_bind =             ng_btsocket_l2cap_raw_bind,
  94         .pru_connect =          ng_btsocket_l2cap_raw_connect,
  95         .pru_control =          ng_btsocket_l2cap_raw_control,
  96         .pru_detach =           ng_btsocket_l2cap_raw_detach,
  97         .pru_disconnect =       ng_btsocket_l2cap_raw_disconnect,
  98         .pru_peeraddr =         ng_btsocket_l2cap_raw_peeraddr,
  99         .pru_send =             ng_btsocket_l2cap_raw_send,
 100         .pru_shutdown =         NULL,
 101         .pru_sockaddr =         ng_btsocket_l2cap_raw_sockaddr,
 102         .pru_close =            ng_btsocket_l2cap_raw_close,
 103 };
 104
 105 /*
 106  * Bluetooth SEQPACKET L2CAP sockets
 107  */
 108
 109 static struct pr_usrreqs        ng_btsocket_l2cap_usrreqs = {
 110         .pru_abort =            ng_btsocket_l2cap_abort,
 111         .pru_accept =           ng_btsocket_l2cap_accept,
 112         .pru_attach =           ng_btsocket_l2cap_attach,
 113         .pru_bind =             ng_btsocket_l2cap_bind,
 114         .pru_connect =          ng_btsocket_l2cap_connect,
 115         .pru_control =          ng_btsocket_l2cap_control,
 116         .pru_detach =           ng_btsocket_l2cap_detach,
 117         .pru_disconnect =       ng_btsocket_l2cap_disconnect,
 118         .pru_listen =           ng_btsocket_l2cap_listen,
 119         .pru_peeraddr =         ng_btsocket_l2cap_peeraddr,
 120         .pru_send =             ng_btsocket_l2cap_send,
 121         .pru_shutdown =         NULL,
 122         .pru_sockaddr =         ng_btsocket_l2cap_sockaddr,
 123         .pru_close =            ng_btsocket_l2cap_close,
 124 };
 125
 126 /*
 127  * Bluetooth STREAM RFCOMM sockets
 128  */
 129
 130 static struct pr_usrreqs        ng_btsocket_rfcomm_usrreqs = {
 131         .pru_abort =            ng_btsocket_rfcomm_abort,
 132         .pru_accept =           ng_btsocket_rfcomm_accept,
 133         .pru_attach =           ng_btsocket_rfcomm_attach,
 134         .pru_bind =             ng_btsocket_rfcomm_bind,
 135         .pru_connect =          ng_btsocket_rfcomm_connect,
 136         .pru_control =          ng_btsocket_rfcomm_control,
 137         .pru_detach =           ng_btsocket_rfcomm_detach,
 138         .pru_disconnect =       ng_btsocket_rfcomm_disconnect,
 139         .pru_listen =           ng_btsocket_rfcomm_listen,
 140         .pru_peeraddr =         ng_btsocket_rfcomm_peeraddr,
 141         .pru_send =             ng_btsocket_rfcomm_send,
 142         .pru_shutdown =         NULL,
 143         .pru_sockaddr =         ng_btsocket_rfcomm_sockaddr,
 144         .pru_close =            ng_btsocket_rfcomm_close,
 145 };
 146
 147 /*
 148  * Bluetooth SEQPACKET SCO sockets
 149  */
 150
 151 static struct pr_usrreqs        ng_btsocket_sco_usrreqs = {
 152         .pru_abort =            ng_btsocket_sco_abort,
 153         .pru_accept =           ng_btsocket_sco_accept,
 154         .pru_attach =           ng_btsocket_sco_attach,
 155         .pru_bind =             ng_btsocket_sco_bind,
 156         .pru_connect =          ng_btsocket_sco_connect,
 157         .pru_control =          ng_btsocket_sco_control,
 158         .pru_detach =           ng_btsocket_sco_detach,
 159         .pru_disconnect =       ng_btsocket_sco_disconnect,
 160         .pru_listen =           ng_btsocket_sco_listen,
 161         .pru_peeraddr =         ng_btsocket_sco_peeraddr,
 162         .pru_send =             ng_btsocket_sco_send,
 163         .pru_shutdown =         NULL,
 164         .pru_sockaddr =         ng_btsocket_sco_sockaddr,
 165         .pru_close =            ng_btsocket_sco_close,
 166 };
 167
 168 /*
 169  * Definitions of protocols supported in the BLUETOOTH domain
 170  */
 171
 172 static struct protosw           ng_btsocket_protosw[] = {
 173 {
 174         .pr_type =              SOCK_RAW,
 175         .pr_domain =            &ng_btsocket_domain,
 176         .pr_protocol =          BLUETOOTH_PROTO_HCI,
 177         .pr_flags =             PR_ATOMIC|PR_ADDR,
 178         .pr_ctloutput =         ng_btsocket_hci_raw_ctloutput,
 179         .pr_init =              ng_btsocket_hci_raw_init,
 180         .pr_usrreqs =           &ng_btsocket_hci_raw_usrreqs,
 181 },
 182 {
 183         .pr_type =              SOCK_RAW,
 184         .pr_domain =            &ng_btsocket_domain,
 185         .pr_protocol =          BLUETOOTH_PROTO_L2CAP,
 186         .pr_flags =             PR_ATOMIC|PR_ADDR,
 187         .pr_init =              ng_btsocket_l2cap_raw_init,
 188         .pr_usrreqs =           &ng_btsocket_l2cap_raw_usrreqs,
 189 },
 190 {
 191         .pr_type =              SOCK_SEQPACKET,
 192         .pr_domain =            &ng_btsocket_domain,
 193         .pr_protocol =          BLUETOOTH_PROTO_L2CAP,
 194         .pr_flags =             PR_ATOMIC|PR_CONNREQUIRED,
 195         .pr_ctloutput =         ng_btsocket_l2cap_ctloutput,
 196         .pr_init =              ng_btsocket_l2cap_init,
 197         .pr_usrreqs =           &ng_btsocket_l2cap_usrreqs,
 198 },
 199 {
 200         .pr_type =              SOCK_STREAM,
 201         .pr_domain =            &ng_btsocket_domain,
 202         .pr_protocol =          BLUETOOTH_PROTO_RFCOMM,
 203         .pr_flags =             PR_CONNREQUIRED,
 204         .pr_ctloutput =         ng_btsocket_rfcomm_ctloutput,
 205         .pr_init =              ng_btsocket_rfcomm_init,
 206         .pr_usrreqs =           &ng_btsocket_rfcomm_usrreqs,
 207 },
 208 {
 209         .pr_type =              SOCK_SEQPACKET,
 210         .pr_domain =            &ng_btsocket_domain,
 211         .pr_protocol =          BLUETOOTH_PROTO_SCO,
 212         .pr_flags =             PR_ATOMIC|PR_CONNREQUIRED,
 213         .pr_ctloutput =         ng_btsocket_sco_ctloutput,
 214         .pr_init =              ng_btsocket_sco_init,
 215         .pr_usrreqs =           &ng_btsocket_sco_usrreqs,
 216 },
 217 };
 218
 219 #define ng_btsocket_protosw_end \
 220         &ng_btsocket_protosw[nitems(ng_btsocket_protosw)]
 221
 222 /*
 223  * BLUETOOTH domain
 224  */
 225
 226 static struct domain ng_btsocket_domain = {
 227         .dom_family =           AF_BLUETOOTH,
 228         .dom_name =             "bluetooth",
 229         .dom_protosw =          ng_btsocket_protosw,
 230         .dom_protoswNPROTOSW =  ng_btsocket_protosw_end
 231 };
 232
 233 /*
 234  * Socket sysctl tree
 235  */
 236
 237 SYSCTL_NODE(_net_bluetooth_hci, OID_AUTO, sockets,
 238     CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
 239     "Bluetooth HCI sockets family");
 240 SYSCTL_NODE(_net_bluetooth_l2cap, OID_AUTO, sockets,
 241     CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
 242     "Bluetooth L2CAP sockets family");
 243 SYSCTL_NODE(_net_bluetooth_rfcomm, OID_AUTO, sockets,
 244     CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
 245     "Bluetooth RFCOMM sockets family");
 246 SYSCTL_NODE(_net_bluetooth_sco, OID_AUTO, sockets,
 247     CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
 248     "Bluetooth SCO sockets family");
 249
 250 /*
 251  * Module
 252  */
 253
 254 static moduledata_t     ng_btsocket_mod = {
 255         "ng_btsocket",
 256         ng_btsocket_modevent,
 257         NULL
 258 };
 259
 260 DECLARE_MODULE(ng_btsocket, ng_btsocket_mod, SI_SUB_PROTO_DOMAIN,
 261         SI_ORDER_ANY);
 262 MODULE_VERSION(ng_btsocket, NG_BLUETOOTH_VERSION);
 263 MODULE_DEPEND(ng_btsocket, ng_bluetooth, NG_BLUETOOTH_VERSION,
 264         NG_BLUETOOTH_VERSION, NG_BLUETOOTH_VERSION);
 265 MODULE_DEPEND(ng_btsocket, netgraph, NG_ABI_VERSION,
 266         NG_ABI_VERSION, NG_ABI_VERSION);
 267
 268 /*
 269  * Handle loading and unloading for this node type.
 270  * This is to handle auxiliary linkages (e.g protocol domain addition).
 271  */
 272
 273 static int
 274 ng_btsocket_modevent(module_t mod, int event, void *data)
 275 {
 276         int     error = 0;
 277
 278         switch (event) {
 279         case MOD_LOAD:
 280                 break;
 281
 282         case MOD_UNLOAD:
 283                 /* XXX can't unload protocol domain yet */
 284                 error = EBUSY;
 285                 break;
 286
 287         default:
 288                 error = EOPNOTSUPP;
 289                 break;
 290         }
 291
 292         return (error);
 293 } /* ng_btsocket_modevent */
 294
 295 VNET_DOMAIN_SET(ng_btsocket_);